EP3046840B1 - Équipement pour bouteilles de l'emballage avec un film de matériau extensible - Google Patents

Équipement pour bouteilles de l'emballage avec un film de matériau extensible Download PDF

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Publication number
EP3046840B1
EP3046840B1 EP14793307.1A EP14793307A EP3046840B1 EP 3046840 B1 EP3046840 B1 EP 3046840B1 EP 14793307 A EP14793307 A EP 14793307A EP 3046840 B1 EP3046840 B1 EP 3046840B1
Authority
EP
European Patent Office
Prior art keywords
containers
bottles
rows
wrapping
guiding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP14793307.1A
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German (de)
English (en)
Other versions
EP3046840A2 (fr
Inventor
Cattaneo ALESSANDRO
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krones AG
Original Assignee
Krones AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krones AG filed Critical Krones AG
Priority to EP17207675.4A priority Critical patent/EP3330192B1/fr
Publication of EP3046840A2 publication Critical patent/EP3046840A2/fr
Application granted granted Critical
Publication of EP3046840B1 publication Critical patent/EP3046840B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B21/00—Packaging or unpacking of bottles
    • B65B21/24—Enclosing bottles in wrappers
    • B65B21/245—Enclosing bottles in wrappers in flexible wrappers, e.g. foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/008—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material by webs revolving around articles moved along the axis of revolution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/58—Applying two or more wrappers, e.g. in succession
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B21/00—Packaging or unpacking of bottles
    • B65B21/02—Packaging or unpacking of bottles in or from preformed containers, e.g. crates
    • B65B21/04—Arranging, assembling, feeding, or orientating the bottles prior to introduction into, or after removal from, containers
    • B65B21/06—Forming groups of bottles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B65B35/40—Arranging and feeding articles in groups by reciprocating or oscillatory pushers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/30—Arranging and feeding articles in groups
    • B65B35/44—Arranging and feeding articles in groups by endless belts or chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
    • B65B61/06—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting
    • B65B61/10—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages by cutting using heated wires or cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/02—Devices for feeding articles or materials to conveyors
    • B65G47/04—Devices for feeding articles or materials to conveyors for feeding articles
    • B65G47/06—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines
    • B65G47/08—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding
    • B65G47/084—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding grouping articles in a predetermined 2-dimensional pattern
    • B65G47/088—Devices for feeding articles or materials to conveyors for feeding articles from a single group of articles arranged in orderly pattern, e.g. workpieces in magazines spacing or grouping the articles during feeding grouping articles in a predetermined 2-dimensional pattern cylindrical articles

Definitions

  • the present invention relates to a continuous bundling apparatus, that is, a machine capable of accomplishing a unitary and compact wrapping (the so-called bundle) of a bottle array, by means of a thin film of plastic material; in particular, the invention relates to a bundling apparatus which employs stretching plastic film.
  • a traditional and widespread method provides the use of heat-shrinking plastic film.
  • a film of heat-shrinking plastic material is wound around an array of four/six bottles, arranged side by side to form an assembly of two/three bottles on two rows, which is then subjected to an oven to cause the shrinking of the film and thus form a compact and stable bundle.
  • the stability of this bundle is a fundamental feature, if one takes into account the - often rough and careless - handling which it undergoes during the transfer from the manufacturing site to the purchasing sites of shopping centres and from these to the purchasers' homes.
  • WO99/14122 discloses a bundling machine wherein, regardless of the film used, no continuous functioning is obtained, but it is provided to first divide the bottles into single assemblies of a predetermined number of pieces, to subsequently wrap with film the single assembly.
  • EP 708 028 discloses a similar solution.
  • the number of bottles of the bundle in this case is predetermined and, to be able to change it, it is necessary to act replacing a series of mechanic members, in particular the templates which define the bottle position.
  • EP2202186 also discloses a bundling machine which acts discontinuously, winding with plastic film the individual bottle assemblies, after having separated them from the mass of fed bottles.
  • EP 197 574 discloses a different solution for package wrapping - which may also be bottle packages - with stretching film, that is, film which does not need to undergo heat-shrinking.
  • This solution consists in causing a sequence of bottle assemblies to advance continuously, along a feeding line, and to cause them to be wound around by a stretching film laid as a continuous spiral, subsequently providing to severe the packages one from the other through a severing device.
  • the object of the invention disclosed in EP 1 431 185 is a machine capable of sequentially performing two windings, one above the other: the former as a continuous spiral and the subsequent one - after the cutting and the severing of the package - on the package itself rotated by 90° with respect to the others.
  • EP 197 574 discloses another similar machine, wherein the winding of the plastic film is accomplished through two reels inclined in an opposite way with respect to the transport line.
  • WO2012/055490 discloses a winding apparatus with plastic film, where two film coils are used. However, no specific arrangement is provided for effectively obtaining a final bundle, neither in connection with the entering step of bottles, nor in the step of the removal and severing of the individual bundle.
  • the main one derives from the fact that the stretching film, as known, is suitably stretched before the application, undergoing great elongation, up to the order of 300%; from this stretching a corresponding elastic shrinking force derives, which is the one which normally ensures the integrity of the package even in difficult transport and displacement conditions.
  • this force - which acts also immediately after the application of the first film - causes that, in particular, a package which has been severed from the reminder before the application of the second film undergoes a twisting force which may cause the warping thereof, even with release of the contents, that is, precisely that effect which one aimed to avoid.
  • EP 1 495 973 discloses a dragging and indexing system of a mass of bottles, which acts through a pair of wheels, provided with peripheral recesses with which part of the container body engages.
  • US 5 979 147 , DE 383 94 98 and EP 2 415 695 disclose similar apparatuses, wherein there are provided wheel means or moving bars provided with engaging members for sorting and indexing the bottles along the displacement path.
  • the problem at the bottom of the invention is therefore that of supplying a structure of bundling machine which overcomes the mentioned drawbacks.
  • a process for the wrapping of containers is provided, particularly bottles, into bundles comprising rows of adjacent containers, wherein said containers are continuously fed to a wrapping station according to a displacement axis, wherein they are wound with a spiral of a stretching plastic film defining a continuous-wrapping, wherein said containers are pushed along a path portion upstream of the wrapping station by a conveying unit provided with at least guiding and supporting means of said containers and with a pacing unit, and wherein downstream of each winding unit of said wrapping station, said containers wound with said stretching plastic film are withdrawn with the help of a dragging device, said guiding and supporting means comprising elongated members in the longitudinal direction of the displacement axis, which extend also within said wrapping station.
  • the containers are guided by said guiding and supporting means which comprise at least external guiding means, which remain resting on external surfaces of external rows of containers, and internal guiding means, which remain resting on internal surfaces of two opposite rows of containers.
  • the array of containers wrapped with said stretching film is divided into separate groups by a cutting unit, which acts crosswise to the displacement axis of the containers in correspondence of a position in which transversal rows of adjacent containers have been previously moved apart overcoming the elastic resistance of said stretching film by tension means.
  • said wrapping station comprises two winding units wherein respective reels of stretching plastic film are caused to rotate in opposite directions for winding counter-rotating coils of plastic film on said rows of containers.
  • a wrapping apparatus of containers is provided, particularly bottles, into bundles comprising rows of adjacent containers, comprising a wrapping station wherein a film of stretching plastic material is continuously wound spirally on adjacent rows of containers moving according to a displacement axis, said film being delivered by reels rotating around said displacement axis, wherein upstream of said wrapping station a conveying unit is provided, provided with at least guiding and supporting means of said containers and with a pacing unit and wherein downstream of each winding unit of said wrapping station, a dragging device is provided apt to impart a withdrawal force to said rows of containers wound with stretching plastic film, said guiding and supporting means comprising members elongated in the direction of said displacement axis, which extend also within said wrapping station.
  • a cutting and spacing apart unit downstream of said wrapping station a cutting and spacing apart unit is provided, provided at least with a bridge carriage, alternately movable according to a translation axis parallel to the displacement direction of said containers, whereon a cutting device is mounted movable crosswise to said translation axis.
  • the progress movement of said bridge carriage is synchronised with the movement of said rows of containers based on a control determined by a counting sensor of said containers.
  • an elongation mechanism provided with a first pair of retaining members and a second pair of retaining members mounted on said bridge carriage, upstream and downstream of said cutting device, respectively, mutually movable apart and each apt to engage a line of said containers.
  • said pacing unit comprises at least an intermediate dragging device acting on the outer surfaces of said rows of containers, simultaneously engaging a plurality of containers for each outer row.
  • the intermediate dragging device consists of a pair of annular-loop conveyor belts, having a dragging surface running on a vertical plane, arranged on two opposite sides with respect to the main horizontal conveyor belt, said annular-loop conveyor belts being provided with equidistant vertical ribbings for engaging between two adjacent containers of said rows of containers.
  • said intermediate dragging device is mounted above and upstream with respect to a second lower dragging device which consists of a pair of disc-shaped plates, arranged on two opposite sides with respect to the main horizontal conveyor belt, mounted rotating on respective vertical axes and making up supporting plane for the base of said containers, each of said plates carrying an upright central turret representing a centring and initial adjustment means of the position of said bottles.
  • a wrapping apparatus of containers is provided, particularly bottles, into bundles comprising rows of adjacent containers, comprising a wrapping station wherein a film of stretching plastic material is continuously spirally wound on adjacent rows of containers moving according to a displacement axis, said film being delivered by reels rotating around said displacement axis, wherein downstream of said wrapping station a cutting and spacing-apart unit is provided, at least provided with a bridge carriage, alternately movable according to a translation axis parallel to the displacement direction of said containers, whereon a cutting device is mounted movable transversally to said translation axis and wherein an elongation mechanism is furthermore provided, provided with a first pair of retaining members and a second pair of retaining members mounted on said bridge carriage, upstream and downstream of said cutting device, respectively, mutually movable apart and each apt to engage a line of said containers for distancing them from each other and define a greater crossing space for said cutting device.
  • a bundling apparatus consists, in a way known per se, of a bottle feeding line, of a winding station and of a downstream severing device.
  • the winding or wrapping station which makes up the unit in which the bottle wrapping is practically completed with the stretching film, may be of any known type, for example as disclosed in Italian application MI2011A001543 in the name of the same Applicant. Since this station does not form a specific object of the present invention, it will not described here in further detail.
  • a calibrated conveying station comprising suitable means for bottle pacing control and adjustment.
  • an improved conveying assembly 1 for bottles B is provided, arranged between a traditional conveyor belt upstream (not shown in fig. 1 ) and a wrapping unit immediately downstream.
  • the wrapping station in the embodiment shown, consists of two machines 2 and 3 for the winding of stretching film, arranged sequentially one after the other along the displacement axis of bottles B; the two winding machines are arranged for continuously winding a web of stretching film around the displacement axis of bottles B: the rotary motion of a reel of film around the axis of the displacement line, combined with the bottle progress motion, causes the laying of a plurality of helical coils of stretching film around the bottles.
  • the reels of film on the two machines move with a rotary motion in opposite directions.
  • Bottles B typically progress on the displacement line in an array of two parallel rows, with the bottles on the two rows mutually aligned, so as to form specularly adjacent pairs. In other words, along the direction crosswise to the rows, lines of mutually aligned bottles form (typically two, but theoretically even more).
  • the transfer of the bottles within the winding unit occurs in a way known from the art, for example through a slide mounted cantilevered as disclosed in MI2011A001543.
  • improved conveying assembly 1 (better visible in figs. 2-3 ) consists of a conventional conveyor belt or moving carpet 10, arranged according to a horizontal plane, and of bottle guiding and supporting means, as well as of a pacing unit 1a.
  • the guiding and supporting means imply members elongated in the longitudinal direction of the displacement axis and extend into wrapping assembly 2, 3 with the function of accurately guiding the two rows of bottles and of supporting them in their condition of adjacent pairs, despite the development of twisting forces deriving from the laying of the stretching film in the shape of a spiral.
  • the bottle guiding and supporting means comprise at least external guiding means, which rest on external surfaces of the bottle rows, and internal guiding means, which rest on internal surfaces of the two bottle rows.
  • the external guiding means are in the shape of two pairs of lateral rods 11 and 12 which constrain laterally, at two different heights, the two bottle rows B resting on belt 10.
  • the two pairs of lateral rods 11 and 12 are preferably adjustable in a horizontal position, so as to be able to be arranged more or less close to the central displacement axis of conveying assembly 1.
  • the first pair of lateral rods 11 is mounted at a height little above the resting plane of belt 10, for example at 0.5-5 cm from belt 10, hence in the proximity of the base of the bottles ( fig. 6A ).
  • the second pair of lateral rods 12 is mounted in the proximity of the half height of the bottle, preferably above the average height. If bottles B have a wavy shape, with a surface recess (as illustrated in fig. 6A ), the second pair of lateral rods is arranged in correspondence of this bottle recess or bend, so as to be arranged inside the theoretical profile of the package wrapping.
  • the internal guiding means are instead in the shape of an upper rail 13, arranged at the height of the terminal neck of the bottles.
  • rail 13 is supported over the conveying assembly 1 at a height just below the bottle caps (see fig. 6A ).
  • Rail 13 acts as crosswise spacer between the corresponding pairs of the bottle necks of the two rows of bottles B, so as to avoid that the upper part of the bottles may move mutually closer under the tension applied by the stretching film of the wrapping.
  • this upper rail 13 extends longitudinally according to the displacement axis of conveyor belt 10, up into the two units 2 and 3 of the winding assembly.
  • rail 13 consists of a rod of low-friction plastic material or other material coated with low-friction material (for example, teflon®).
  • pacing unit 1a In the terminal part of conveying assembly 1, just before the entry into the winding assembly, pacing unit 1a is provided, which acts in cooperation with the guiding and supporting means.
  • Pacing unit 1a has the function of causing bottles B to progress in a way adjusted with a preset pitch, pacing and compacting pressure between one bottle and the next, before said bottles arrive at the wrapping station.
  • Pacing unit 1a has at least an intermediate gripping and dragging device 14, which cooperates with the underlying conveyor belt 2 for completing the synchronised displacement of the bottles.
  • the positioning of the intermediate gripping and dragging device 14 is clearly visible in fig. 6A .
  • this gripping and dragging device 14 essentially consists of a pair of conveyor belts 14' and 14" having their dragging surface running on a vertical plane, which drags said bottles acting by friction and modular coupling against the lateral surface thereof.
  • the two belts 14' and 14" have the same shape and a specularly symmetrical arrangement with respect to a vertical, central plane; therefore, only conveyor belt 14' is described in detail.
  • belt 14' (as well as belt 14") is closed loopwise around a pair of vertical-axis transmission wheels 16, 17, at least one of which is motorised, being integral in rotation with a toothed gear 16' which meshes with the drive shaft of a drive motor M 1 .
  • Transmission wheels 16, 17 have respective support shafts mounted on respective constraint brackets 18a, 19a, in turn adjustedly mounted in position along a common guide 20, so as to be able to adjust the mutual distance between the two transmission wheels 16 and 17 for the purpose of a correct tensioning of belt 14'.
  • ribbings 15 preferably shaped with a planar-surface tooth profile.
  • the ribbings are preferable of low-rigidity material, such as rubber, in order to have a good surface grip on the bottles with which they are meant to come into contact.
  • the mutual distance, or pitch, between the ribbings determines the positioning and the mutual clamping of the bottles in the way better described in the following.
  • all the components of the two intermediate gripping and dragging devices 14' and 14" make up, together with the respective brackets 18a and 19a, a unit removably mounted on the apparatus frame.
  • the entire unit may be easily replaced with a similar one having a conveyor belt with a different pitch and height of ribbings 15. It is thereby simple adapting the machine to the different formats of bottles to be wrapped.
  • the dragging and pacing of bottles B is ensured by intermediate gripping and dragging device 14, with accuracy, due to the fact that ribbings 15 engage between one bottle and the next.
  • the distance between ribbings 15 determines the correct mutual positioning of the bottles, with the desired mutual clamping force, so as to form two perfectly aligned rows, which are thus constrained up to the wrapping area where the stretching plastic film is wrapped.
  • the paced and regular dragging action of the intermediate gripping and dragging device 14, in the proximity of the wrapping station, is aided and balanced also by conveyor belt 2 which, pushing the bottles by friction from below, contributes to the balance of the forces which guarantee an alignment of the two rows and the correct attitude of the bottles.
  • the bottles thus move in a compact way, that is, mutually adhering on two adjacent rows, with a preset clamping force, and that until full winding with the web of stretching plastic material and until the separation of the array of bottles into assemblies - for example each one of six bottles - to form so-called "bundles" ready for transport to distribution.
  • Fig. 10 shows the terminal part of a feeding line of the bottles according to another embodiment of the invention.
  • the conveying and pacing adjustment means in this case consist of a pair of suitably arranged dragging devices which adjust in a perfectly calibrated way the mutual positioning of the bottles and the mutual compacting pressure thereof.
  • the compacting means essentially consist of two distinct gripping and dragging devices, an intermediate one 14 and the other a lower one 105, better described with reference to drawings 4 and 5, respectively, which cooperate with underlying conveyor belt 10 as a complement to bottle displacement.
  • intermediate device 14 is identical to the one described further above.
  • Lower gripping and dragging device 105 essentially consists of a pair of rotating plates 116, 117, mounted on the same frame and arranged at the two opposite sides of the bottle displacement line.
  • the upper surface of plates 116 and 117 is arranged flush with the plane of conveyor belt 10, and have mutually parallel vertical rotation axes, X-X and X1-X1, respectively.
  • These rotating plates 116 and 117 represent a resting plane for the base of bottles B, for guiding them on a controlled path, as detailed here in the following.
  • the two plates 116 and 117 have identical structure, therefore in the following only one of the two will be described, it being understood that the other has the same composition and configuration.
  • Plate 116 is integral in rotation with a central motorised shaft 116a and carries, centrally, an upwardly projecting turret 118, making up a centring and paced dragging means of the bottles.
  • Turret 118 consists of a plurality of pins or columns 119, vertically arranged between the surface of the respective support plate 116 and the opposite surface of a counterplate 120, itself integral in rotation with the motorised central shaft. Said columns 119 are distributed on a circumference centred on the rotation axis X-X of plate 116 and are mutually angularly equidistant. Depending on the size (substantially the diameter) of the bottles, the dimension of the lying circumference of columns 119 is determined: in the illustrated example, eight columns 119 equidistant on a lying circumference with diameter 140 mm are provided.
  • Counterplate 120 has a perimeter inscribed in a circumference of a diameter slightly larger than the lying circumference of columns 119.
  • counterplate 120 has a wavy circumferential profile, provided with a plurality of saddle-like recesses 120a between the pairs of adjacent columns 119.
  • the saddle-like recesses 120a are meant to accommodate a lateral portion of the bottles, in particular in the lower part thereof, as better described in the following.
  • lower dragging device 105 is located - with respect to the bottles B which progress on belt 10 -in correspondence of the lower part of the bottles, with plate 116 upwardly flush with conveyor belt 10; vice versa, intermediate dragging device 14, and hence dragging belts 14' and 14", lies immediately above, so as to grip a substantially central area of the bottles. It can be noticed, instead, that lower dragging device 105 is located, in the progress direction of the bottles, immediately upstream of intermediate device 14.
  • the bottles are initially engaged by lower device 105 which - with a rigid rotation - takes them and arranges them at the correct progress pace, determined by the rotation speed of turret 118, in order to then deliver them to upper dragging device 14 for the subsequent regular and aligned progress towards the wrapping station.
  • bottles B progress in the direction indicated by arrow F, are firstly gasped at the base, since they engage in sequence with the recesses 120a between two columns 119 of turret 118.
  • the progress of the bottles in the compacting station is therefore ensured, in an initial phase, by the dragging performed by lower device 105.
  • lower dragging device 105 is capable of unloading any thrust pressure by which the bottles arrive along the feeding line.
  • the divergent portion D of the lateral containment guides may also contribute to this function, which portion is arranged immediately upstream of turrets 118 and which defines a guide so that the bottles arrive in an optimal position at recesses 120a.
  • the two units 2, 3 for the winding of the plastic film are provided in sequence.
  • the bottles rest on a cantilevered slide shelf, around which the coils of plastic film meant for the wrapping of the bottles are necessarily laid, as clearly illustrated in the Italian application mentioned above.
  • the dragging unit consists of at least a top withdrawal belt T1, T2 and T3, arranged immediately downstream of wrapping units 2 and 3, in the upper part: top withdrawal belt T1, T2 and T3 hence rests on the upper surface of the double row of bottles, by now wrapped with plastic film, imparting by friction a certain traction in the progress direction of the bottles: the regular dragging action, aligned with the progress axis of the transport line, provides an aid to the extraction of the wrapping material from the slide shelf provided in the wrapping unit, thereby contributing to maintaining a balance of the forces imparted on the bundle which hence tends not to disassemble.
  • the two wrapping units are mutually distanced precisely by the amount necessary for installing between them a withdrawal belt T1 and an underlying portion of conveyor belt.
  • a withdrawal belt may also be arranged differently, the positioning thereof in the top part of the bottles implies significant advantages. Firstly, being on the displacement axis, it may be individual without creating imbalances in the traction forces. Moreover, acting on the top part of the bottles, where the neck and the cap is provided, it causes no yielding of bottles B, because the forces act on the longitudinal axis where bottle rigidity is greatest.
  • a cutting and spacing-apart unit 4 is provided which also separates the individual bundles, clearly described in the following with reference to figs. 13-15 .
  • Cutting and spacing-apart unit 4 also consists of a frame 200 which supports a conveyor belt 201 apt to support and lead the wrapped bottles coming out of the downstream wrapping unit 3.
  • Conveyor belt 201 is closed loopwise around two terminal cylinders (not visible in the drawings) and around a triplet of intermediate cylinders (also not visible) mounted on a carriage 202 translatable in a longitudinal direction, forming a typical short interruption 202' in the continuity of the upper surface of the conveyor belt.
  • Translatable carriage 202 is controlled according to an alternate movement, backwards and forwards: in its progress movement (that is, in the bottle progress direction) it is synchronised with conveyor belt 201, so that the two progress speeds are substantially identical; in the backward movement of carriage 202 the speed is determined in order to reduce idle times and to keep the work area limited, compatibly with the accelerations which the carriage can withstand.
  • a bridge frame 203 which is arranged crosswise across the displacement line defined by conveyor belt 201.
  • a hot-blade device 204 On bridge 203 there is installed a hot-blade device 204, apt to transfer crosswise to the conveyor belt, from one part to the other (see comparison of figs. 14B and 15B ), a thin hot blade (of the type commonly known per se) arranged with a vertical attitude.
  • the hot blade device has two hot blades, arranged on the opposite edges of a vertical bar: thereby, the device may be effective - for hot cutting the plastic film - in both run directions, that is, proceeding from the left to the right of the conveyor belt, but also in the opposite direction.
  • a bottle counting sensor optical sensor, mechanic encoder, or other
  • a control unit of carriage 202 furthermore provides to control the backward and forward movement of the carriage, as well as the crosswise movement of hot blade device 204, so as to suitably severe bottle assemblies (the so-called bundles) from the single body of wrapped bottles coming out from wrapping units 2 and 3.
  • the separation of the bottle groups occurs through the action of the hot blade device 204 which cuts the plastic film, inserting itself crosswise between two adjacent bottle lines, that is between one pair of bottles and the preceding (or following) pair.
  • carriage 202 - once the counting sensor has detected the passage of the desired number of bottles - is driven into synchronised movement with conveyor belt 201, so that the hot blade may act on the wrapping material at a null relative displacement speed with respect to the bottles.
  • an elongation mechanism is furthermore provided.
  • the elongation mechanism comprises at least a first pair of retaining plates 205a, 205b and a second pair of retaining plates 206a, 206b, upstream and downstream, respectively, of hot blade device 204.
  • These pairs of retaining plates are mounted on the same carriage 202 on which the hot blade also translates; however, at least one of the pair of retaining plates is longitudinally movable with respect to the other: the opportunity in substance exists of moving mutually apart, by a short distance (in the order of 0.5-2 cm), the two pairs of retaining plates.
  • the retaining plates are configured for engaging each a pair of adjacent bottles and, hence, the pairs of bottles belonging to two adjacent lines.
  • the engagement may be accomplished simply by pressure (that is, the two opposite plates 205a and 205b or 206a and 206b, move closer to each other clamping the bottles in the middle, with a certain pressure) or with suitable mechanic protrusions (for example folded parts of the plate metal sheet, or crosswise projecting flaps, or other) or again by other systems.
  • the first pair of retaining plates hence retains a pair of side-by-side bottles, while the second pair of retaining plates retains the immediately adjacent pair of side-by-side bottles (that is, the bottles of the adjacent line): thereby, causing then the mutual moving apart of the pairs of plates, a slight spacing-apart of the two pairs of adjacent bottles is also determined - temporarily overcoming the elastic resistance of the film wrapping - by so much as to allow an easy introduction of the hot blade (which, standing vertically, runs crosswise to the row of bottles and cuts the wrapping film). Said hot blade runs in the area between the two pairs of bottles maintained spaced-apart by the pairs of moved-apart retaining plates, so as to find a space sufficient not to interfere with the surface of the bottles.
  • Bridge 203 is initially still in a backward (home) position (home).
  • the counting sensor Through the counting sensor the passage of the desired number of bottles is detected (for example three bottles for standard bundles) and hence the movement of carriage 202 is controlled, so that bridge 203 perfectly follows the motion of conveyor belt 201, cancelling relative speed.
  • the elongation mechanism is controlled, so as to temporarily space apart the two pairs of adjacent bottles and to introduce therebetween the hot blade through the crosswise movement of cutting device 204.
  • the hot blade cuts across the plastic film wound on the bottles, severing a bundle, with the desired number of bottles (downstream of the hot blade), from the remaining continuous body of wrapped bottles (upstream of the hot blade).
  • Hot blade device 204 if it is shaped as in the preferred embodiment illustrated above, remains on the side in which it has completed the cut - so as not to delay the carriage return times - and it will move in the opposite direction in the subsequent cutting cycle.
  • the cutting unit is extremely effective and allows to produce bundles of any size - suitably programming the action of the hot blade based on the detection of the counting sensor - with no risk for bottle integrity.
  • the movement of turrets 18, conveyor belt 2 and side belts 10, 11 may be synchronized either by simply assembling with suitable electric axes the respective driving motors, or by providing mechanic devices for mutual coupling.
  • the height and the lateral position of intermediate dragging device 14, such as that of the guiding rods and of the upper rail, may be adjusted at will, by systems known per se.
  • a height and lateral position adjustment of these elements allows to always arrange the thrusting action on the bottles as close as possible to the centre of gravity thereof, adapting the apparatus to the formats of the bottles to be wrapped.
  • the apparatus of the invention may be employed for the wrapping also of other objects (for example other types of containers, such as glass bottles, tins, boxes, ...) which are presented in parallel arrays (even more than two rows) and must be wrapped in groups.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Basic Packing Technique (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (17)

  1. Procédé d'emballage de récipients, en particulier des bouteilles, en lots comprenant des rangées de récipients adjacents, lesdits récipients étant délivrés en continu, en fonction d'un axe de déplacement, à un poste d'emballage (2, 3) et entourés d'une spirale de film plastique étirable définissant un emballage continu, caractérisé en ce que :
    lesdits récipients (B) sont poussés dans une partie en amont du poste d'emballage (2, 3) grâce à une unité de transport (1) dotée d'au moins un moyen de guidage et de support desdits récipients et grâce à une unité d'entraînement (1a), et en ce que dans la partie aval de chaque unité d'enroulement (2, 3) dudit poste d'emballage, lesdits récipients (B) entourés dudit film plastique étirable sont retirés par l'intermédiaire d'un dispositif de traction (T1, T2, T3), ledit moyen de guidage et de support comprenant des éléments (11, 12, 13) allongés dans la direction longitudinale de l'axe de déplacement qui se déploient dans ledit poste d'emballage (2, 3).
  2. Procédé selon la revendication 1, dans lequel lesdits récipients (B) sont guidés par ledit moyen de guidage et de support qui comprend au moins un moyen de guidage (11, 12) externe qui repose sur les surfaces externes des rangées externes de récipients, et un moyen de guidage (13) interne qui repose sur les surfaces internes de deux rangées opposées de récipients.
  3. Procédé selon les revendications 1 ou 2, dans lequel, en aval dudit poste d'emballage (2, 3), le réseau de récipients entourés dudit film étirable est divisé en groupes séparés par une unité de coupe qui agit de manière transversale à l'axe de déplacement des récipients correspondant à une position dans laquelle des lignes transversales de récipients adjacents ont été au préalable espacées en surmontant la résistance élastique dudit film étirable grâce à un moyen d'élongation (205a à 206b).
  4. Procédé selon les revendications 1, 2 ou 3, dans lequel ledit poste d'emballage deux unités d'enroulement (2, 3) dans lesquelles les bobines respectives de film plastique étirable sont amenées à tourner dans des sens opposés afin d'enrouler des bobines contrarotatives de film plastique sur lesdites rangées de récipients.
  5. Appareil d'emballage pour récipients, en particulier des bouteilles, en lots comprenant des rangées de récipients adjacents, comprenant un poste d'emballage (2, 3) dans lequel un film de matériaux plastiques étirables est enroulé en spirale continue sur des rangées adjacentes de récipients se déplaçant en fonction d'un axe de déplacement, ledit film étant délivré par des bobines tournant autour dudit axe de déplacement, caractérisé en ce qu'en amont dudit poste d'emballage (2, 3) une unité de transport est dotée d'au moins un moyen de guidage de support desdits récipients et d'une unité d'entraînement (1a), et en ce qu'en aval de chaque unité d'entraînement (2, 3) dudit poste d'emballage, est prévu un dispositif de traction (T1, T2, T3) pouvant communiquer une force de retrait aux dites rangées de récipients emballés avec ledit film plastique étirable, ledit moyen de guidage et de support comprenant des éléments (11, 12, 13) allongés dans le sens dudit axe de déplacement qui s'étend également dans ledit poste d'emballage (2, 3).
  6. Appareil selon la revendication 5, dans lequel ledit moyen de guidage et de support comprend au moins un moyen de guidage (11, 12) externe qui repose sur les surfaces externes des rangées externes de récipients et un moyen de guidage (13) interne qui repose sur les surfaces internes de deux rangées opposées de récipients.
  7. Appareil selon les revendications 5 ou 6, dans lequel, en aval dudit poste d'emballage (2, 3) est prévue une unité de coupe et de séparation (4), dotée d'au moins un chariot en pont (202, 203) se déplaçant alternativement en fonction d'un axe de translation parallèle à la direction de déplacement desdits récipients sur lequel est monté un dispositif de coupe (104), déplaçable transversalement par rapport au dit axe de translation.
  8. Appareil selon la revendication 7, dans lequel le mouvement de progrès dudit chariot en pont (202, 203) est synchronisé avec le mouvement desdites rangées de récipients sur la base d'une commande déterminée par un détecteur de comptage desdits récipients.
  9. Appareil selon les revendications 7 ou 8, dans lequel un mécanisme d'élongation est de plus utilisé, doté d'une première paire d'éléments de retenue (205a, 205b) et d'une seconde paire d'éléments de retenue (206a, 206b) montées respectivement sur ledit chariot en pont (202, 203) en amont et en aval dudit dispositif de coupe (204), mobiles mutuellement séparément et pouvant engager chacune une lignes desdits récipients.
  10. Appareil selon l'une quelconque des revendications 5 à 9, dans lequel ladite unité d'entraînement (1a) comprend au moins un dispositif intermédiaire de traction (14) agissant sur les surfaces externes desdites rangées de récipients, en engageant simultanément une pluralité de récipients pour chaque rangée externe.
  11. Appareil selon la revendication 10, dans lequel ledit dispositif intermédiaire de traction (14) est constitué d'une paire de courroies de transport en boucle (14', 14") comportant une surface de traction se déplaçant sur un plan vertical, agencées sur deux côtés opposés par rapport à la courroie de transport (10) horizontale principale, lesdites courroies de transport en boucle (14', 14") étant munies de cannelures verticales (15) destinées à s'engager entre deux récipients adjacents desdites rangées de récipients (B).
  12. Appareil selon la revendication 11, dans lequel lesdites cannelures verticales (15) présentent une section transversale en forme de dent avec des surfaces planes.
  13. Appareil selon les revendications 10, 11 ou 12, dans lequel ledit dispositif intermédiaire de traction (14) est monté au-dessus et en face d'un second dispositif inférieur de traction (105) constitué d'une paire de plaques (116, 117) en forme de disque agencées sur deux flancs opposés par rapport à la courroie de transport (10) horizontale principale, montées pour tourner sur des axes verticaux (X-X et X'-X') respectifs et constituant un élément de repos pour la base desdits récipients, chacune desdites plaques (116.117) transportant une tourelle (118) centrale droite constituant un moyen de centrage et d'ajustement initial de la position desdites bouteilles.
  14. Appareil selon la revendication 13, dans lequel chacune desdites tourelles (118) est constituée d'une pluralité de colonnes verticales (119) immobilisées entre ladite plaque de support (116, 117) respective et une contreplaque (120) et réparties de manière équidistante en fonction de la circonférence couchée centrée sur l'axe de rotation (X-X et X'-X') de chaque plaque.
  15. Appareil selon la revendication 14, dans lequel chacune desdites contreplaques (120) présente un profil circonférentiel en forme d'onde formant une pluralité de creux (120a) pour l'enveloppe de la base de bouteille entre chaque paire de colonnes (119) adjacentes.
  16. Appareil selon l'une quelconque des revendications 13 à 15, dans lequel le premier dispositif intermédiaire de traction (14) est monté à une hauteur aussi proche que possible du centre de gravité desdits récipients alors que ledit second dispositif inférieur de traction (105) est monté à une hauteur correspondant à la base desdits récipients.
  17. Appareil selon l'une quelconque des revendications 5 à 16, dans lequel lesdites unités d'enroulement (2, 3) sont au nombre de deux, dotées de bobines de film plastique étirable mises en rotation dans des sens opposés autour de l'axe de déplacement desdits récipients.
EP14793307.1A 2013-09-20 2014-09-18 Équipement pour bouteilles de l'emballage avec un film de matériau extensible Active EP3046840B1 (fr)

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IT001550A ITMI20131550A1 (it) 2013-09-20 2013-09-20 Apparecchiatura per l'imballaggio di bottiglie con pellicola sottile di materiale plastico estensibile.
PCT/IB2014/064630 WO2015040565A2 (fr) 2013-09-20 2014-09-18 Appareil d'enveloppement de bouteilles employant un film mince de matière plastique étirable

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BR (1) BR112016006043B1 (fr)
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ES2657043T3 (es) 2018-03-01
EP3330192A1 (fr) 2018-06-06
CA2924746A1 (fr) 2015-03-26
EP3046840A2 (fr) 2016-07-27
ITMI20131550A1 (it) 2015-03-21
US20160207651A1 (en) 2016-07-21
WO2015040565A3 (fr) 2015-08-13
US10597181B2 (en) 2020-03-24
EP3330192B1 (fr) 2019-10-23
WO2015040565A2 (fr) 2015-03-26
BR112016006043B1 (pt) 2021-06-29

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